Chemistry Practice Question and Answer
8 4 Q:
5f869f7ce5230d6207339745 4 Q:
5f698e99473e9b04bc1fb350 4 Q:
6576edf47274ac7b5885d375 Answer : 3. "Ethanol + carbon dioxide + energy"
4 Q:
61655bfa7d6182610f5d706e 4 Q:
6441214c72ca731a9945cdd8 4 Q:
5fe9ab4f755fc73bd0796506 4 Q:
647de965e72c4684a1dcb8b3 4 Q:
61275a37302e8b067c99aa84
Q: Who proposed the word 'molecule'?
1523 05f869f7ce5230d6207339745
5f869f7ce5230d6207339745- 1E. Rutherfordfalse
- 2J.J. Thomsonfalse
- 3Democritustrue
- 4John Doltonfalse
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Answer : 3. "Democritus"
Q: What type of reaction is corrosion?
1521 05f698e99473e9b04bc1fb350
5f698e99473e9b04bc1fb350- 1Reduction reactionfalse
- 2precipitation reactionfalse
- 3oxidation reactiontrue
- 4combination reactionfalse
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Answer : 3. "oxidation reaction"
Q: Which of the following products are formed during anaerobic respiration in yeast?
1519 06576edf47274ac7b5885d375
6576edf47274ac7b5885d375- 1Acetic acid + energyfalse
- 2Lactic acid + carbon dioxide + energyfalse
- 3Ethanol + carbon dioxide + energytrue
- 4Lactic acid + energyfalse
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Answer : 3. "Ethanol + carbon dioxide + energy"
Explanation :
1. Yeast breaks down glucose, producing ethanol and carbon dioxide and energy.
2. Yeast reacts anaerobically.
Q: Who was the inventor of positron?
1519 061655bfa7d6182610f5d706e
61655bfa7d6182610f5d706e- 1Chadwickfalse
- 2Andersontrue
- 3Rutherfordfalse
- 4J.J. Thomsonfalse
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Answer : 2. "Anderson "
Q: Which of the following is an organic compound with the formula C6H4Cl2 that is used as a fumigant insecticide to control cloth months?
1515 06441214c72ca731a9945cdd8
6441214c72ca731a9945cdd8- 1Paradichlorobenzenetrue
- 2Chlorobenzenefalse
- 3Benzoyl chloridefalse
- 4Ethylbenzenefalse
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Answer : 1. "Paradichlorobenzene"
Q: Which is not a property of Ionic bond?
1506 05fe9ab4f755fc73bd0796506
5fe9ab4f755fc73bd0796506- 1Gain of electronsfalse
- 2Losses of electronsfalse
- 3Transfer of electronsfalse
- 4Sharing of electronstrue
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Answer : 4. "Sharing of electrons"
Q: In 1931, who recognised that an aromatic compound must have an odd number of pairs of electrons, which can mathematically be written as 4n+2 (n = 0,1,2,3 etc.)?
1499 0647de965e72c4684a1dcb8b3
647de965e72c4684a1dcb8b3- 1Jacob Berzeliusfalse
- 2Erich Huckeltrue
- 3Antoine Lavoisierfalse
- 4Auguste Laurentfalse
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Answer : 2. "Erich Huckel"
Q: Which metal floats when put in water?
1499 061275a37302e8b067c99aa84
61275a37302e8b067c99aa84- 1Calciumtrue
- 2Nickelfalse
- 3Magnesiumfalse
- 4Potassiumfalse
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Answer : 1. "Calcium"
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